The A’s have placed 26-year old righty reliever Trystan Magnuson on the 15-day disabled list due to right shoulder tendinitis. Magnuson has pitched in 9 games (0 starts) for the A’s so far this year and he is 0-0 with a 6.14 ERA and a 1.36 WHIP. He has been replaced in the bullpen by 24-year old lefty Jordan Norberto who has been called up by the A’s. Norberto has pitched in 5 games (0 starts) for the A’s earlier this year and he was 0-0 with a 3.60 ERA and a 1.50 WHIP. He has also pitched in 43 games (0 starts) in AAA-ball this year for the A’s and D-Backs in which he is 6-2 with 2 saves, a 4.18 ERA and a 1.43 WHIP.

The A’s have placed 32-year old righty reliever Michael Wuertz on the 15-day disabled list with a thumb injury. Wuertz has pitched in 34 games (0 starts) so far this year and he is 0-0 with a 4.88 ERA and a 1.60 WHIP. Well at least we know that Wuertz won’t be traded until August (at the earliest) with the trade deadline tomorrow. The A’s have called up 27-year old lefty reliever Jerry Blevins to replace Wuertz in the bullpen. Blevins has pitched in 16 games (0 starts) for the A’s so far this year and he is 0-0 with a 3.86 ERA and a 1.78 WHIP.

23-year old lefty starting pitcher Brett Anderson has underwent Tommy John Surgery. He will miss the rest of the 2011 season and most if not all of the 2012 season. Anderson pitched in 13 games (all starts) for the A’s this year and he was 3-6 with a 4.00 ERA and a 1.33 WHIP. Anderson has pitched in 62 games (all starts) in his first three years with the A’s and he is 21-23 with a 3.66 ERA and a 1.27 WHIP. This is a big blow to the A’s as Anderson is one of the best starting pitchers they have.

The A’s have placed 33-year old righty reliever Grant Balfour on the 15-day disabled list with a right oblique strain. Balfour has pitched in 33 games (0 starts) for the A’s so far this year and he is 4-1 with 2 saves, a 2.48 ERA and a 1.16 WHIP. He has only given up 23 hits in his first 32 2/3 innings this year while whiffing 35 batters. The A’s should be able to manage until Balfour is ready to return to action because they have one of he best and deepest bullpens in all of baseball.

The Oakland A’s have placed 32-year old righty swinging LF Josh Willingham on the 15-day disabled list due to a strained left Achilles tendon. Willingham has played in 64 games for the A’s so far this year and he is 53 for 229 (.231 avg, .718 OPS) with 27 runs scored, 10 homers, 42 RBIs and 4 stolen bases. The A’s have called up 24-year old righty swinging 1B/OF Chris Carter to replace Willingham on the active roster. Carter has played in 29 games in A+AAA-ball so far this year and he is 28 for 109 (.257 avg, .917 OPS) with 15 runs scored, 8 homers, 28 RBIs and 1 stolen base. Carter got his first taste of the majors for the A’s last year when he played in 24 games in which he was 13 for 70 (.186 avg, .585 OPS) with 8 runs scored, 3 homers, 7 RBIs and 1 stolen base.